A.2
B.4
C.6
D.8
您可能感興趣的試卷
你可能感興趣的試題
A.in such cases, the air supply is no longer optimal, the thermal load will be higher
B.governor hunting will occur
C.torsional vibrations as other mechanical vibrations may occur
D.all of the above are correct
A few spots of turbocharger can be caused by（）
①crash stop of engine
② rapid increased of engine speed
A.①only is correct
B.②only is correct
C.both ① and ②are correct
D.neither ① or ② correct
A.improve power factor
B.reduce voltage oscillation
C.increase the insulation of circuits
D.eliminate regenerated magnetic fields
A.for the release of air from the cooling water
B.providing expansion room for heated cooling water
C.a place for implementing water and water treatment agent
D.all of the above
A.1/2
B.1
C.2
D.3
最新試題
The main purpose of port State control is not to（）
The cetane rating of diesel fuel is an indication of the （）
（） is not installed on the main switchboar.
Using a file without a handle may result in （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The shipboard oil pollution emergency plan will be invalid after （）
The condensers located in various stages of a flash evaporator are cooled by（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish